Looking at past episodes of this OP podcast (https://www.thisisproductmanagement.com/episodes/) the following are, amongst others, aspects of product management:
R&D
Building Human Machines
Employee Experience
Building APIs
Consulting
Pricing
Customer Experience
Venture Capital
Now I don't disagree with that at all, and have been involved with those things and many more, but at some point the definition becomes overly broad as to not mean anything outside of a specific organization being referenced.